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Adaptive ketosis

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https://www.readbyqxmd.com/read/29607218/nutritional-ketosis-and-mitohormesis-potential-implications-for-mitochondrial-function-and-human-health
#1
REVIEW
Vincent J Miller, Frederick A Villamena, Jeff S Volek
Impaired mitochondrial function often results in excessive production of reactive oxygen species (ROS) and is involved in the etiology of many chronic diseases, including cardiovascular disease, diabetes, neurodegenerative disorders, and cancer. Moderate levels of mitochondrial ROS, however, can protect against chronic disease by inducing upregulation of mitochondrial capacity and endogenous antioxidant defense. This phenomenon, referred to as mitohormesis, is induced through increased reliance on mitochondrial respiration, which can occur through diet or exercise...
2018: Journal of Nutrition and Metabolism
https://www.readbyqxmd.com/read/29576959/the-use-of-nutritional-supplements-to-induce-ketosis-and-reduce-symptoms-associated-with-keto-induction-a-narrative-review
#2
Cliff J D C Harvey, Grant M Schofield, Micalla Williden
Background: Adaptation to a ketogenic diet (keto-induction) can cause unpleasant symptoms, and this can reduce tolerability of the diet. Several methods have been suggested as useful for encouraging entry into nutritional ketosis (NK) and reducing symptoms of keto-induction. This paper reviews the scientific literature on the effects of these methods on time-to-NK and on symptoms during the keto-induction phase. Methods: PubMed, Science Direct, CINAHL, MEDLINE, Alt Health Watch, Food Science Source and EBSCO Psychology and Behavioural Sciences Collection electronic databases were searched online...
2018: PeerJ
https://www.readbyqxmd.com/read/29536468/-management-of-the-dry-and-transition-periods-of-dairy-cattle-in-free-stall-housing-systems-in-lower-saxony-part-2-risk-factores-for-subclinical-ketosis-hypocalcaemia-and-increased-lipomobilisation
#3
Pamela Oetting-Neumann, Karl Rohn, Martina Hoedemaker
OBJECTIVE: Determination of the frequency of subclinical hypocalcaemia, increased lipomobilisation and subclinical ketosis as problems in dairy herds and identification of possible risk factors. MATERIAL AND METHODS: Information was obtained from 51 dairy farms on husbandry, feeding, management of the cows and heifers, animal health and prophylactic treatments using a questionnaire. Blood samples from 20% of the cows and 30% of the heifers of each farm (= herd sample) were collected in the week ante partum (a...
February 2018: Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere
https://www.readbyqxmd.com/read/29467800/resting-metabolic-rate-of-obese-patients-under-very-low-calorie-ketogenic-diet
#4
Diego Gomez-Arbelaez, Ana B Crujeiras, Ana I Castro, Miguel A Martinez-Olmos, Ana Canton, Lucia Ordoñez-Mayan, Ignacio Sajoux, Cristobal Galban, Diego Bellido, Felipe F Casanueva
Background: The resting metabolic rate (RMR) decrease, observed after an obesity reduction therapy is a determinant of a short-time weight regain. Thus, the objective of this study was to evaluate changes in RMR, and the associated hormonal alterations in obese patients with a very low-calorie ketogenic (VLCK)-diet induced severe body weight (BW) loss. Method: From 20 obese patients who lost 20.2 kg of BW after a 4-months VLCK-diet, blood samples and body composition analysis, determined by DXA and MF-Bioimpedance, and RMR by indirect calorimetry, were obtained on four subsequent visits: visit C-1, basal, initial fat mass (FM) and free fat mass (FFM); visit C-2, - 7...
2018: Nutrition & Metabolism
https://www.readbyqxmd.com/read/29331464/somatic-cell-count-based-selection-reduces-susceptibility-to-energy-shortage-during-early-lactation-in-a-sheep-model
#5
J Bouvier-Muller, C Allain, F Enjalbert, Y Farizon, D Portes, G Foucras, R Rupp
During the transition from late gestation to early lactation ruminants experience a negative energy balance (NEB), which is considered to increase susceptibility to mammary infections. Our previous study in 2 divergent lines of sheep selected for high and low somatic cell score (SCS) suggested an association between the response to NEB and genetic susceptibility to mastitis. Forty-eight early-lactation primiparous dairy ewes from the 2 SCS genetic lines were allocated to 2 homogeneous subgroups-an NEB group, which was energy restricted and received 60% of the energy requirements for 15 d, and a control-fed group-to obtain 4 balanced groups of 12 ewes: high-SCS positive energy balance, low-SCS positive energy balance, high-SCS NEB, and low-SCS NEB...
March 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29321682/intermittent-metabolic-switching-neuroplasticity-and-brain-health
#6
REVIEW
Mark P Mattson, Keelin Moehl, Nathaniel Ghena, Maggie Schmaedick, Aiwu Cheng
During evolution, individuals whose brains and bodies functioned well in a fasted state were successful in acquiring food, enabling their survival and reproduction. With fasting and extended exercise, liver glycogen stores are depleted and ketones are produced from adipose-cell-derived fatty acids. This metabolic switch in cellular fuel source is accompanied by cellular and molecular adaptations of neural networks in the brain that enhance their functionality and bolster their resistance to stress, injury and disease...
February 2018: Nature Reviews. Neuroscience
https://www.readbyqxmd.com/read/29055723/proteomics-and-metabolomics-characterizing-the-pathophysiology-of-adaptive-reactions-to-the-metabolic-challenges-during-the-transition-from-late-pregnancy-to-early-lactation-in-dairy-cows
#7
Fabrizio Ceciliani, Cristina Lecchi, Christiane Urh, Helga Sauerwein
The transition from late pregnancy to early lactation is a critical period in a dairy cow's life due to the rapidly increasing drain of nutrients from the maternal organism towards the foetus and into colostrum and milk. In order to cope with the challenges of parturition and lactation, comprehensive adaptive reactions comprising the endocrine and the immune system need to be accomplished. There is high variation in this coping ability and both metabolic and infectious diseases, summarized as "production diseases", such as hypocalcaemia (milk fever), fatty liver syndrome, laminitis and ketosis, may occur and impact welfare, productive lifespan and economic outcomes...
October 18, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28752049/beta-adrenergic-receptors-are-critical-for-weight-loss-but-not-for-other-metabolic-adaptations-to-the-consumption-of-a-ketogenic-diet-in-male-mice
#8
Nicholas Douris, Bhavna N Desai, Ffolliott M Fisher, Theodore Cisu, Alan J Fowler, Eleen Zarebidaki, Ngoc Ly T Nguyen, Donald A Morgan, Timothy J Bartness, Kamal Rahmouni, Jeffrey S Flier, Eleftheria Maratos-Flier
OBJECTIVE: We have previously shown that the consumption of a low-carbohydrate ketogenic diet (KD) by mice leads to a distinct physiologic state associated with weight loss, increased metabolic rate, and improved insulin sensitivity [1]. Furthermore, we identified fibroblast growth factor 21 (FGF21) as a necessary mediator of the changes, as mice lacking FGF21 fed KD gain rather than lose weight [2]. FGF21 activates the sympathetic nervous system (SNS) [3], which is a key regulator of metabolic rate...
August 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28712316/disturbed-bovine-mitochondrial-lipid-metabolism-a-review
#9
REVIEW
J H Han van der Kolk, J J Gross, V Gerber, R M Bruckmaier
In mammals, excess energy is stored primarily as triglycerides, which are mobilized when energy demands arise and cannot be covered by feed intake. This review mainly focuses on the role of long chain fatty acids in disturbed energy metabolism of the bovine species. Long chain fatty acids regulate energy metabolism as ligands of peroxisome proliferator-activated receptors. Carnitine acts as a carrier of fatty acyl groups as long-chain acyl-CoA derivatives do not penetrate the mitochondrial inner membrane. There are two different types of disorders in lipid metabolism which can occur in cattle, namely the hypoglycaemic-hypoinsulinaemic and the hyperglycaemic-hyperinsulinaemic type with the latter not always associated with ketosis...
December 2017: Veterinary Quarterly
https://www.readbyqxmd.com/read/28662684/atypical-blood-glucose-response-to-continuous-and-interval-exercise-in-a-person-with-type-1-diabetes-a-case-report
#10
Othmar Moser, Gerhard Tschakert, Alexander Mueller, Werner Groeschl, Thomas R Pieber, Gerd Koehler, Max L Eckstein, Richard M Bracken, Peter Hofmann
BACKGROUND: Therapy must be adapted for people with type 1 diabetes to avoid exercise-induced hypoglycemia caused by increased exercise-related glucose uptake into muscles. Therefore, to avoid hypoglycemia, the preexercise short-acting insulin dose must be reduced for safety reasons. We report a case of a man with long-lasting type 1 diabetes in whom no blood glucose decrease during different types of exercise with varying exercise intensities and modes was found, despite physiological hormone responses...
June 30, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28450882/oral-%C3%AE-hydroxybutyrate-increases-ketonemia-decreases-visceral-adipocyte-volume-and-improves-serum-lipid-profile-in-wistar-rats
#11
Rennan de Oliveira Caminhotto, Ayumi Cristina Medeiros Komino, Flaviane de Fatima Silva, Sandra Andreotti, Rogério Antônio Laurato Sertié, Gabriela Boltes Reis, Fabio Bessa Lima
BACKGROUND: Ketosis can be induced in humans and in animals by fasting or dietary interventions, such as ketogenic diets. However, the increasing interest on the ketogenic state has motivated the development of alternative approaches to rapidly increase ketonemia using less drastic interventions. Here, it was tested whether oral intake of a β-hydroxybutyrate (βHB) mineral salt mixture could increase ketonemia in Wistar rats without any other dietary changes, thereby being a useful model to study ketones effects alone on metabolism...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28407858/influence-of-lipoproteins-at-dry-off-on-metabolism-of-dairy-cows-during-transition-period-and-on-postpartum-reproductive-outcomes
#12
Martina Crociati, Lakamy Sylla, Claudia Floridi, Antonella Comin, Gabriele Fruganti, Maurizio Monaci, Giuseppe Stradaioli
High-yielding dairy cows are metabolically challenged during transition, when intense mobilization and hepatic oxidation of lipids is achieved, thus leading to fatty infiltration, ketosis and generalized inflammation. The condition is associated to periparturient diseases and poor fertility. The aim of this study was to assess whether serum lipoprotein concentrations in the dry period could influence the occurrence of postpartum diseases and reproductive performance in dairy cows. The study was carried out on 30 multiparous Holstein Friesian cows...
May 2017: Theriogenology
https://www.readbyqxmd.com/read/28239404/impact-of-a-6-week-non-energy-restricted-ketogenic-diet-on-physical-fitness-body-composition-and-biochemical-parameters-in-healthy-adults
#13
Paul Urbain, Lena Strom, Lena Morawski, Anja Wehrle, Peter Deibert, Hartmut Bertz
BACKGROUND: The ketogenic diet (KD) is a very low-carbohydrate, high-fat and adequate-protein diet that without limiting calories induces different metabolic adaptations, eg, increased levels of circulating ketone bodies and a shift to lipid metabolism. Our objective was to assess the impact of a 6-week non-energy-restricted KD in healthy adults beyond cohorts of athletes on physical performance, body composition, and blood parameters. METHODS: Our single arm, before-and-after comparison study consisted of a 6-week KD with a previous preparation period including detailed instructions during classes and individual counselling by a dietitian...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28223292/muscle-pgc-1%C3%AE-is-required-for-long-term-systemic-and-local-adaptations-to-a-ketogenic-diet-in-mice
#14
Svenia Schnyder, Kristoffer Svensson, Bettina Cardel, Christoph Handschin
Low-carbohydrate/high-fat (LCHF) diets are increasingly popular dietary interventions for body weight control and as treatment for different pathological conditions. However, the mechanisms of action are still poorly understood, in particular, in long-term administration. Besides liver, brain, and heart, skeletal muscle is one of the major organs involved in the regulation of physiological and pathophysiological ketosis. We assessed the role of the peroxisome proliferator-activated receptor γ coactivator 1α (PGC-1α) in skeletal muscle of male wild-type control and PGC-1α muscle-specific knockout mice upon 12 wk of LCHF diet feeding...
May 1, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27861911/metabolism-of-ketone-bodies-during-exercise-and-training-physiological-basis-for-exogenous-supplementation
#15
Mark Evans, Karl E Cogan, Brendan Egan
Optimising training and performance through nutrition strategies is central to supporting elite sportspeople, much of which has focused on manipulating the relative intake of carbohydrate and fat and their contributions as fuels for energy provision. The ketone bodies, namely acetoacetate, acetone and β-hydroxybutyrate (βHB), are produced in the liver during conditions of reduced carbohydrate availability and serve as an alternative fuel source for peripheral tissues including brain, heart and skeletal muscle...
May 1, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/27430501/ketone-bodies-and-exercise-performance-the-next-magic-bullet-or-merely-hype
#16
Philippe J M Pinckaers, Tyler A Churchward-Venne, David Bailey, Luc J C van Loon
Elite athletes and coaches are in a constant search for training methods and nutritional strategies to support training and recovery efforts that may ultimately maximize athletes' performance. Recently, there has been a re-emerging interest in the role of ketone bodies in exercise metabolism, with considerable media speculation about ketone body supplements being routinely used by professional cyclists. Ketone bodies can serve as an important energy substrate under certain conditions, such as starvation, and can modulate carbohydrate and lipid metabolism...
March 2017: Sports Medicine
https://www.readbyqxmd.com/read/26911673/glucose-concentration-in-capillary-blood-of-dairy-cows-obtained-by-a-minimally-invasive-lancet-technique-and-determined-with-three-different-hand-held-devices
#17
B Mair, M Drillich, D Klein-Jöbstl, P Kanz, S Borchardt, L Meyer, I Schwendenwein, M Iwersen
BACKGROUND: Dairy cows have a massive demand for glucose at the onset of lactation. A poor adaption to this period leads to an excessive negative energy balance with an increased risk for ketosis and impaired animal health and production. Besides the measurement of ketones, analysing the glucose concentration in blood is reported as helpful instrument for diagnosis and differentiation of ketosis. Monitoring metabolic parameters requires multiple blood sampling. In other species, new blood sampling techniques have been introduced in which small amounts of blood are rapidly analysed using electronic hand-held devices...
2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/26778306/capitalizing-on-fine-milk-composition-for-breeding-and-management-of-dairy-cows
#18
REVIEW
N Gengler, H Soyeurt, F Dehareng, C Bastin, F Colinet, H Hammami, M-L Vanrobays, A Lainé, S Vanderick, C Grelet, A Vanlierde, E Froidmont, P Dardenne
The challenge of managing and breeding dairy cows is permanently adapting to changing production circumstances under socio-economic constraints. If managing and breeding address different timeframes of action, both need relevant phenotypes that allow for precise monitoring of the status of the cows, and their health, behavior, and well-being as well as their environmental impact and the quality of their products (i.e., milk and subsequently dairy products). Milk composition has been identified as an important source of information because it could reflect, at least partially, all these elements...
May 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/26479386/the-role-of-tca-cycle-anaplerosis-in-ketosis-and-fatty-liver-in-periparturient-dairy-cows
#19
REVIEW
Heather M White
The transition to lactation period in dairy cattle is characterized by metabolic challenges, negative energy balance, and adipose tissue mobilization. Metabolism of mobilized adipose tissue is part of the adaptive response to negative energy balance in dairy cattle; however, the capacity of the liver to completely oxidize nonesterified fatty acids may be limited and is reflective of oxaloacetate pool, the carbon carrier of the tricarboxylic acid cycle. Alternative metabolic fates of acetyl-CoA from nonesterified fatty acids include esterification to triacylglycerides and ketogenesis, and when excessive, these pathways lead to fatty liver and ketosis...
2015: Animals: An Open Access Journal From MDPI
https://www.readbyqxmd.com/read/25704973/antepartal-insulin-like-growth-factor-1-and-insulin-like-growth-factor-binding-protein-2-concentrations-are-indicative-of-ketosis-in-dairy-cows
#20
M Piechotta, W Mysegades, U Ligges, J Lilienthal, A Hoeflich, A Miyamoto, H Bollwein
A study involving a small number of cows found that the concentrations of insulin-like growth hormone 1 (IGF1) may be a useful predictor of metabolic disease. Further, IGF1 may provide also a pathophysiological link to metabolic diseases such as ketosis. The objective of the current study was to test whether the low antepartal total IGF1 or IGF1 binding protein (IGFBP) concentrations might predict ketosis under field conditions. Clinical examinations and blood sampling were performed antepartum (262-270 d after artificial insemination) on 377 pluriparous pregnant Holstein Friesian cows...
May 2015: Journal of Dairy Science
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